Lockheed Martin Dark Ice: a quantum magnetometer geopositioning system
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Lockheed Martin Dark Ice: a quantum magnetometer geopositioning system
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Re: Lockheed Martin Dark Ice: a quantum magnetometer geopositioning system
#2Very interesting, and amazing technology. But… How is it unjammable? Couldn’t you just generate a big magnetic field?
Re: Lockheed Martin Dark Ice: a quantum magnetometer geopositioning system
#3Very interesting, and amazing technology. But… How is it unjammable? Couldn’t you just generate a big magnetic field?
Magnetic field drops off by an inverse-cubed law (as opposed to inverse-squared for RF). So it would be a lot more impractical to cover large volumes.
Re: Lockheed Martin Dark Ice: a quantum magnetometer geopositioning system
#4Very interesting, and amazing technology. But… How is it unjammable? Couldn’t you just generate a big magnetic field?
Magnetic field drops off by an inverse-cubed law (as opposed to inverse-squared for RF). So it would be a lot more impractical to cover large volumes.
Thanks. I would still be curious to know how the strength of an artificial magnetic field at a range of say 10 km compares to the order of magnitude of local variations they are talking about in the earth’s magnetic field.
Re: Lockheed Martin Dark Ice: a quantum magnetometer geopositioning system
#5Neat. Geopositioning in general is a "hard problem" especially with additional variables/complexities that are introduced for specific use cases (military or not). There's tons of room for cutting edge research here still, and it's exciting to see companies invest in that.
Re: Lockheed Martin Dark Ice: a quantum magnetometer geopositioning system
#6Very interesting, and amazing technology. But… How is it unjammable? Couldn’t you just generate a big magnetic field?
This looks like it might be in a similar vein to the navigation system discussed in a previous post about a new Royal navy test system. There are many good links in the comments https://news.ycombinator.com/item?id=36222625
Re: Lockheed Martin Dark Ice: a quantum magnetometer geopositioning system
#7Very interesting, and amazing technology. But… How is it unjammable? Couldn’t you just generate a big magnetic field?
They also have made a very large and high tech scraping knife, to remove any jam.
/Jk
Re: Lockheed Martin Dark Ice: a quantum magnetometer geopositioning system
#8(2019)
Re: Lockheed Martin Dark Ice: a quantum magnetometer geopositioning system
#9Earlier quoted context omitted.
Magnetic field drops off by an inverse-cubed law (as opposed to inverse-squared for RF). So it would be a lot more impractical to cover large volumes.
Thanks. I would still be curious to know how the strength of an artificial magnetic field at a range of say 10 km compares to the order of magnitude of local variations they are talking about in the earth’s magnetic field.
Make some assumptions, find the relevant equations, and plug in the numbers.